2-(4-Methyl-1-piperazinyl)ethyl 3-pyridinecarboxylate dimaleate 2-(4-Methyl-1-piperazinyl)ethyl nicotinate dimaleate 3-Pyridinecarboxylic acid, (2-(4-methyl-1-piperazinyl)ethyl) ester, dimaleate 57272-31-8 NICOTINIC ACID, 2-(4-METHYL-1-PIPERAZINYL)ETHYL ESTER, DIMALEATE